WaterbendingSprout
v2.0

SproutSend a line of roots from underground to hurt and ensnare your opponent!​

Usage: Player must be standing on grass block (the dirt block not the plant) to use this ability. To use simply look forward, hold shift, and click to shoot. You can also aim it by moving your cursor left to right.

I like the move, especially the fact that it's a nice addition to plantbending, which has been quite dead for a while.
Still has room for improvement, but even with it's first version, it's still pretty solid.